Following the partition of Ireland in 1922, Dublin became the capital of the Irish Free State, later renamed Ireland.

As of 2010, Dublin was listed by the Globalization and World Cities Research Network (Ga WC) as a global city, with a ranking of "Alpha-", which places it amongst the top thirty cities in the world.

The Dubhlinn was a small lake used to moor ships; the Poddle connected the lake with the Liffey.

was an early Christian monastery, believed to have been in the area of Aungier Street, currently occupied by Whitefriar Street Carmelite Church.Those without knowledge of Irish omitted the dot, spelling the name as Dublin.Variations on the name are also found in traditionally Gaelic-speaking areas of Scotland (Gàidhealtachd, cognate with Irish Gaeltachta), such as An Linne Dhubh ("the black pool"), which is part of Loch Linnhe.He called the settlement Eblana polis (Greek: Dublin celebrated its 'official' millennium in 1988, meaning that the Irish government recognised 988 as the year in which the city was settled and that this first settlement would later become the city of Dublin.that the Viking settlement was preceded by a Christian ecclesiastical settlement known as Duibhlinn, from which Dyflin took its name.

Dublin prospered as a trade centre, despite an attempt by King Robert I of Scotland to capture the city in 1317.